Rainfall in Plessis-Saint-Jean trails that of 86% of mainland French towns: 636 mm a year
High summer brings afternoon highs near 26.3°C. Wet weather is most frequent in October and least in March. Frosty nights outnumber those of 74% of mainland French towns. Central heating does most of its work from November to March, in months below 10°C on average.
Figures from Météo-France’s Bouy-sur-Orvin station, 18 km north-east.
A year in Plessis-Saint-Jean at a glance
Each month’s typical high and low in °C, at the Bouy-sur-Orvin station.
What a year in Plessis-Saint-Jean feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Bouy-sur-Orvin.
About 636 mm of rain a year
October is the wettest month and March the driest. About 15 days a year bring 10 mm or more. 20th wettest of 19 towns of 2,500+ in Yonne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Troyes-Barberey
A frosty town: 53 frosts and 57 days of 25°C a year
On about 53 nights a year the air drops to 0°C or below, and on about 6 days it stays below freezing all day. About 57 days a year reach 25°C, and 17 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Bouy-sur-Orvin: a frost is a night of 0°C or below, a summer day (jour d’été) 25°C or more, a hot day (forte chaleur) 30°C or more.
The Météo-France station at Bouy-sur-Orvin
Bouy-sur-Orvin is 18 km north-east of Plessis-Saint-Jean. Every figure on this page is the station’s, not a measurement in Plessis-Saint-Jean itself.
| Station (Météo-France number) | Bouy-sur-Orvin (10057001) |
| Distance from the town | 18 km north-east |
| Station altitude | 102 m |
| Town altitude (its center) | 155 m |
| Period | 1991–2020 |
| Sunshine measured at | Troyes-Barberey, 53 km away |
TownRatings matches each commune to one station with at least 24 years of temperature and rain records: the nearest, counting every 100 m of height difference as 10 km, never across the sea.
How Plessis-Saint-Jean compares
Against the 4,385 towns of 2,500 or more in mainland France, each read from its own matched station. The dots are the other towns of 2,500+ in Yonne.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km, each with its own matched station.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Plessis-Saint-Jean | Bouy-sur-Orvin | 26.3°C | 1.3°C | 636 mm |
| Pont-sur-Yonne 11 km | La Brosse-Mx | 26.4°C about the same | 2.0°C 0.7°C milder | 653 mm |
| Saint-Clément 15 km | Sens | 26.5°C about the same | 1.7°C about the same | 645 mm |
| Sens 17 km | Sens | 26.5°C about the same | 1.7°C about the same | 645 mm |
| Villeneuve-la-Guyard 18 km | La Brosse-Mx | 26.4°C about the same | 2.0°C 0.7°C milder | 653 mm |
| Paron 19 km | Sens | 26.5°C about the same | 1.7°C about the same | 645 mm |
| Donnemarie-Dontilly 20 km | La Brosse-Mx | 26.4°C about the same | 2.0°C 0.7°C milder | 653 mm |
Plessis-Saint-Jean weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Bouy-sur-Orvin station; sunshine at Troyes-Barberey.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.5°C | 1.3°C | 3.9°C | 48 mm | 63 |
| February | 7.9°C | 1.1°C | 4.5°C | 45 mm | 90 |
| March | 12.2°C | 2.8°C | 7.5°C | 44 mm | 148 |
| April | 16.0°C | 4.6°C | 10.3°C | 49 mm | 190 |
| May | 19.7°C | 8.3°C | 14.0°C | 59 mm | 216 |
| June | 23.4°C | 11.1°C | 17.2°C | 57 mm | 231 |
| July | 26.3°C | 13.2°C | 19.8°C | 50 mm | 242 |
| August | 26.0°C | 13.3°C | 19.6°C | 59 mm | 232 |
| September | 21.6°C | 10.3°C | 16.0°C | 50 mm | 186 |
| October | 16.2°C | 7.8°C | 12.0°C | 61 mm | 125 |
| November | 10.4°C | 4.3°C | 7.3°C | 54 mm | 70 |
| December | 7.1°C | 2.0°C | 4.6°C | 59 mm | 57 |
| Year | 16.1°C | 6.7°C | 11.4°C | 636 mm | 1,851 |
Where Plessis-Saint-Jean’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Bouy-sur-Orvin, 18 km away: statistics for 1991–2020.
- Which station: among stations with at least 24 of the 30 years of temperature and rain, the nearest to the commune’s population-weighted center, counting each 100 m of height difference as 10 km; mainland towns use mainland stations and each overseas département its own.
- Altitudes: the town’s from IGN’s RGE ALTI® at its population-weighted center; the station’s from Météo-France.
- Sunshine: the nearest station with at least 10 years of sunshine records, Troyes-Barberey, 53 km away.
- Comparisons: every town of 2,500 or more in mainland France, read the same way; the dots are the towns of 2,500+ in Yonne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Plessis-Saint-Jean’s climate
How warm does Plessis-Saint-Jean get in summer?
July is the warmest month, with average highs of 26.3°C. About 57 days a year reach 25°C, fewer than 57% of mainland French towns, and about 17 reach 30°C.
How cold does Plessis-Saint-Jean get in winter?
February nights average 1.1°C. The air drops to 0°C or below on about 53 nights a year, and about 6 days a year stay below freezing all day.
How much rain does Plessis-Saint-Jean get?
About 636 mm a year, less than 86% of mainland French towns. October is the wettest month (61 mm) and March the driest (44 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Troyes-Barberey (53 km away), averages 1,851 hours of sunshine a year.
Are these figures for Plessis-Saint-Jean itself?
No: they are the normals of the Météo-France station matched to Plessis-Saint-Jean, Bouy-sur-Orvin, 18 km away. France publishes its climate normals by station, not by commune; a valley, a hill or the sea can make a difference over a few kilometers.
Where do these figures come from?
Météo-France’s fiches climatologiques: 30-year averages (1991–2020) for each of its long-running stations, published as open data since 2024. They are normals, not a forecast.
Source: Météo-France, fiches climatologiques, 1991–2020 statistics (station BOUY-SUR-ORVIN, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Plessis-Saint-Jean →
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.